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Title: Fun-sort
Authors: Biedl, Therese
Chan, Timothy
Demaine, Erik D.
Fleischer, Rudolf H.
Golin, Mordecai J.
Munro, J. Ian
Keywords: Dumb-Sort
Issue Date: 20-Feb-2001
Series/Report no.: HKUST Theoretical Computer Science Center Research Report ; HKUST-TCSC-2001-03
Abstract: In this paper we study greedy in-place sorting algorithms which miraculously happen to work in reasonable time. Dumb-Sort which repeatedly compares all possible pairs of array cells sorts n elements in n-1 cycles, or time O(n3). Not-So-Dumb-Sort, which only tests adjacent cells, also sorts in n-1 cycles, or in time O(n2). Guess-Sort, a randomized version of Dumb-Sort, runs in expected time O(n2 log n). And Fun-Sort, an in-place variant of Insertion-Sort that performs repeated insertions by binary search into an initially unsorted array, sorts in time O(n2 log n).
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